It's ok Andy, I'll make it simpler for you. In the beginning there were blobs, these blobs developed into different blobs, bigger, better more complex blobs! Graduallly the blobs took shape! they became early life forms! They oozed their way out of the mud and developed individual features! Legs, arms, wings, etc. Through the years these ex-blobs become more and more complex. Some develop intelligence, they begin using tools, they build things, learn things, create all sorts of wondrous thing! They become humans! Some don't.